byESSA/ARPA Symposium on Acoustic-Gravity Waves (1968 : Boulder, Colo.); Georges, T. M. (Thomas Martin), 1938-; United States. Environmental Science Services Administration; United States. Advanced Research Projects Agency
"Sponsored by the Environmental Science Services Administration and the Advanced Research Projects Agency." Topic: Ionospheric radio wave propagation.
byGreen, Melville S; Sengers, J. V; United States. National Bureau of Standards; National Science Foundation (U.S.); United States. Office of Naval Research; Conference on Phenomena in the Neighborhood of Critical Points (1965 : National Bureau of Standards, Washington, D.C.)
"Conference on Phenomena in the Neighborhood of Critical Points held at the National Bureau of Standards, Washington, D.C., April 5 to 8, 1965"--P. iii Topic: Critical point Congresses.